Rapid Detection Method for Rail Corrugation in High-speed Railways Based on Corrugation-noise Ratio

被引：0
|
作者：
Zhang H. [1 ,2 ]
Lu C. [1 ,3 ]
Gao L. [1 ]
机构：
[1] School of Civil Engineering, Beijing Jiaotong University, Beijing
[2] Research Office, Planning and Standard Research Institute of the National Railway Administration, Beijing
[3] China Railway Society, Beijing
来源：
Tiedao Xuebao/Journal of the China Railway Society | 2024年 / 46卷 / 04期
关键词：
corrugation-noise ratio; mileage positioning; rail corrugation; speed estimation; vibration energy ratio;
D O I：
10.3969/j.issn.1001-8360.2024.04.001
中图分类号：
学科分类号：
摘要：
To achieve full coverage, high-frequency, and rapid measurement of rail corrugation in high-speed railways, a fast detection method was proposed for rail corrugation based on corrugation-noise ratio. A portable ride recorder was used to detect the vehicle vibration and noise data of high-speed trains, and perform numerical integration on the longitudinal acceleration of the vehicle body to preliminarily calculate the train speed and mileage. The deviation value was used between the angular velocity mileage of the body shaking in curved sections and the ledger mileage to correct the speed integration error. Based on the extracted carriage noise data after mileage correction and the 400 ~ 700 Hz frequency band components corresponding to rail corrugation, the ratio of frequency band energy to total noise energy was calculated to obtain the rail corrugation wavelength and mileage when the corrugation-noise ratio exceeded the limit. Based on the analysis of measured data of high-speed trains, the research results show that the maximum error in train positioning mileage after speed correction is 87 m. According to the measurement of rail corrugation waveform and analysis of axle box acceleration vibration energy ratio carried out on the line sections with a corrugation ratio exceeding 0. 3, the wavelength range of rail corrugation is 53~57 mm, while the measured wavelength on site is 53 mm. This method has been verified to provide technical support for the rapid measurement of rail corrugation in high-speed railways. © 2024 Science Press. All rights reserved.
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页码：1 / 8
页数：7
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